CN102022340A - Important plant pump for nuclear power plant - Google Patents
Important plant pump for nuclear power plant Download PDFInfo
- Publication number
- CN102022340A CN102022340A CN2009101961768A CN200910196176A CN102022340A CN 102022340 A CN102022340 A CN 102022340A CN 2009101961768 A CN2009101961768 A CN 2009101961768A CN 200910196176 A CN200910196176 A CN 200910196176A CN 102022340 A CN102022340 A CN 102022340A
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- pump
- bearing
- gland
- pump housing
- impeller
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Abstract
The invention discloses an important plant pump for a nuclear power plant. The pump has a vertical single-shell single-stage centrifugal pump structure; a stator component, a rotor component, a bearing component and a shaft sealing component are arranged in the vertical single-shell single-stage centrifugal pump; the stator component is arranged on a pump body; the shaft sealing component is sealed by a filler; the stator component consists of the pump body, a pump cover and a bearing body; the rotor component consists of a pump shaft, an impeller and a shaft sleeve; the bearing component consists of a bearing and a bearing gland; the shaft sealing component consists of the filler and the filler gland; the pump body is provided with an inlet and an outlet; the inlet is formed vertically and downwardly; and the outlet is formed horizontally. By using the vertical structure, the inlet is formed at the bottom of the pump body, the outlet is horizontally formed on the pump body, meanwhile, the single-stage impeller is adopted, the pump body has a single-layer structure, so that the volume of the pump is reduced, and the pump is convenient to maintain; and simultaneously, the impeller is coaxial with the axis of the pump body, so the shock resistance of the entire pump is enhanced and the life of the pump is prolonged.
Description
Technical field:
The present invention relates to mechanical field, relate in particular to fluid conveying machine, particularly pump, a kind of specifically nuclear power station essential service water pump.
Background technique:
Nuclear power station essential service water pump is the pump group of component cooling water system RRI/SEC heat exchanger, and the liquid heat that the component cooling water system transmission is come finally is transferred to seawater, is the ultimate heat sink of nuclear island.In the prior art, nuclear power station essential service water pump pump group adopts double suction middle open type structure, and its volume is big, maintenance is inconvenient, and impeller is not exclusively concentric with the pump housing, and shock resistance is poor.
Summary of the invention:
The object of the present invention is to provide a kind of nuclear power station essential service water pump, the pump group volume that described this nuclear power station essential service water pump will solve component cooling water system RRI/SEC heat exchanger in the prior art is big, maintenance is inconvenient, the technical problem of shock resistance difference.
This nuclear power station essential service water pump of the present invention is vertical mono-hull one-stage centrifugal pump structure, be provided with stator module in the described vertical mono-hull single stage centrifugal pump, rotor assembly, bearing unit and gland seal assembly, described stator module is arranged on the pump housing, described gland seal assembly adopts packing seal, wherein, the horizontal center of the described pump housing is provided with three pump pin, the suction port of the pump housing vertically downward, the discharge opening horizontal arrangement of the pump housing, described rotor assembly is by pump shaft, impeller and axle sleeve constitute, described pump shaft vertically is arranged in the pump housing, described impeller is arranged on the lower end of pump shaft and is positioned at the center of the pump housing, described axle sleeve is arranged on the middle part of pump shaft, the last end in contact of the lower end of axle sleeve and impeller, described gland seal assembly is arranged on the periphery of axle sleeve, and the upper end of gland seal assembly is provided with Gland, and described Gland is connected with the described pump housing.Described bearing unit is made of bearing support, single-groove grooved ball bearing, a pair of tapered roller bearing and bearing gland, described deep groove ball bearing is arranged on the lower end of described bearing support, described tapered roller bearing is arranged on the upper end of bearing support, and described bearing gland is separately positioned on the upper end of tapered roller bearing and the lower end of deep groove ball bearing.
Further, be provided with oil hole in the bearing support of bearing support lower end and upper end.
Further, the described pump housing and bearing support are single layer structure.
The present invention and prior art are compared, and its effect is actively with tangible.The present invention adopts vertical structure, and suction port is located at pump housing bottom, and discharge opening flatly is located on the pump housing, adopts the single-stage impeller simultaneously again, and the pump housing adopts single layer structure, has dwindled the volume of pump, and is easy to maintenance; Make impeller and pump housing axis coaxle simultaneously, strengthen the shock resistance of entire pump, prolong the life-span of pump.
Description of drawings:
Fig. 1 is a nuclear power station essential service water pump structure schematic representation of the present invention.
Embodiment:
Implementation column 1:
As shown in Figure 1, nuclear power station essential service water pump of the present invention, by vertical mono-hull single stage centrifugal pump, be provided with stator module in the described vertical mono-hull single stage centrifugal pump, rotor assembly, bearing unit and gland seal assembly, stator module is by the pump housing 7, pump cover 6 and bearing support 3 constitute, rotor assembly is by pump shaft 1, impeller 8 and axle sleeve 14 constitute, bearing unit is made of bearing and bearing gland, gland seal assembly is made of filler 12 and Gland 13, the pump housing 7 is provided with suction port 9 and discharge opening 10, suction port 9 vertically downward, discharge opening 10 is horizontally disposed with, pump shaft 1 is arranged in the pump housing 7 vertically, pump shaft 1 lower end is provided with impeller 8, impeller 8 center lines and the pump housing 7 central lines, pump shaft 1 middle part is provided with deep groove ball bearing 4, deep groove ball bearing 4 is arranged at bearing support 3 lower ends, deep groove ball bearing 4 lower ends are provided with lower bearing gland 5, pump shaft 1 middle and upper part is provided with a pair of tapered roller bearing 2, a pair of tapered roller bearing 2 is arranged at bearing support 3 upper ends, tapered roller bearing 2 upper ends are provided with upper bearing (metal) gland 16, pump shaft 1 middle part is arranged with axle sleeve 14, end in contact on axle sleeve 14 lower ends and the impeller 8, axle sleeve 14 peripheries are arranged with filler 12, are provided with a packing ring 11 between filler 12 lower ends and the pump housing 7, and packing ring 11 is sheathed on the pump shaft, filler 12 upper ends are provided with Gland 13, and Gland 13 is connected with the pump housing 7 by bolt.Be provided with a bearing interstage sleeve 15 between axle sleeve 14 upper ends and the deep groove ball bearing 4.
Further, be provided with three pump pin in the outside, the pump housing 7 horizontal center.
Further, be provided with oil hole in the bearing support of bearing support 3 lower ends and upper end, deep groove ball bearing 4 adopts the drier oil selflubricating with tapered roller bearing 2, regularly injects lubricant oil by oil hole and gets final product.
Further, the pump housing 7 and bearing support 3 are single layer structure.
Claims (3)
1. nuclear power station essential service water pump, be vertical mono-hull one-stage centrifugal pump structure, be provided with stator module in the described vertical mono-hull single stage centrifugal pump, rotor assembly, bearing unit and gland seal assembly, described stator module is arranged on the pump housing, described gland seal assembly adopts packing seal, it is characterized in that: the horizontal center of the described pump housing is provided with three pump pin, the suction port of the pump housing vertically downward, the discharge opening horizontal arrangement of the pump housing, described rotor assembly is by pump shaft, impeller and axle sleeve constitute, described pump shaft vertically is arranged in the pump housing, described impeller is arranged on the lower end of pump shaft and is positioned at the center of the pump housing, described axle sleeve is arranged on the middle part of pump shaft, the last end in contact of the lower end of axle sleeve and impeller, described gland seal assembly is arranged on the periphery of axle sleeve, and the upper end of gland seal assembly is provided with Gland, and described Gland is connected with the described pump housing.Described bearing unit is made of bearing support, single-groove grooved ball bearing, a pair of tapered roller bearing and bearing gland, described deep groove ball bearing is arranged on the lower end of described bearing support, described tapered roller bearing is arranged on the upper end of bearing support, and described bearing gland is separately positioned on the upper end of tapered roller bearing and the lower end of deep groove ball bearing.
2. nuclear power station essential service water pump as claimed in claim 1 is characterized in that: be provided with oil hole in the bearing support of bearing support lower end and upper end.
3. nuclear power station essential service water pump as claimed in claim 1, it is characterized in that: the described pump housing and bearing support are single layer structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101961768A CN102022340A (en) | 2009-09-23 | 2009-09-23 | Important plant pump for nuclear power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101961768A CN102022340A (en) | 2009-09-23 | 2009-09-23 | Important plant pump for nuclear power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102022340A true CN102022340A (en) | 2011-04-20 |
Family
ID=43864009
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101961768A Pending CN102022340A (en) | 2009-09-23 | 2009-09-23 | Important plant pump for nuclear power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102022340A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595202A (en) * | 2014-12-30 | 2015-05-06 | 湖南湘电长沙水泵有限公司 | Vertical volute pump for high-level water tower |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4688990A (en) * | 1983-08-30 | 1987-08-25 | Borg-Warner Corporation | Pump construction |
| RU2284425C1 (en) * | 2005-03-21 | 2006-09-27 | Государственное образовательное учреждение высшего профессионального образования Нижегородский государственный технический университет (ГОУВПО НГТУ) | Liquid-metal coolant transfer pump |
| CN201148989Y (en) * | 2008-01-18 | 2008-11-12 | 上海东方泵业(集团)有限公司 | Bidirectional compacting stuffing sealing device |
| CN201187456Y (en) * | 2008-03-12 | 2009-01-28 | 沈阳鼓风机(集团)有限公司 | Large-scale vertical water pump for factory of nuclear power station |
-
2009
- 2009-09-23 CN CN2009101961768A patent/CN102022340A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4688990A (en) * | 1983-08-30 | 1987-08-25 | Borg-Warner Corporation | Pump construction |
| RU2284425C1 (en) * | 2005-03-21 | 2006-09-27 | Государственное образовательное учреждение высшего профессионального образования Нижегородский государственный технический университет (ГОУВПО НГТУ) | Liquid-metal coolant transfer pump |
| CN201148989Y (en) * | 2008-01-18 | 2008-11-12 | 上海东方泵业(集团)有限公司 | Bidirectional compacting stuffing sealing device |
| CN201187456Y (en) * | 2008-03-12 | 2009-01-28 | 沈阳鼓风机(集团)有限公司 | Large-scale vertical water pump for factory of nuclear power station |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595202A (en) * | 2014-12-30 | 2015-05-06 | 湖南湘电长沙水泵有限公司 | Vertical volute pump for high-level water tower |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110420 |